﻿using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using System.Text.RegularExpressions;

namespace STT
{
    // INI文件操作类
    internal class IniFileHelper
    {
        private string strIniFilePath;  // ini配置文件路径

        // 返回0表示失败，非0为成功
        [DllImport("kernel32", CharSet = CharSet.Auto)]
        private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);

        // 返回取得字符串缓冲区的长度
        [DllImport("kernel32", CharSet = CharSet.Auto)]
        private static extern long GetPrivateProfileString(string section, string key, string strDefault, StringBuilder retVal, int size, string filePath);

        [DllImport("Kernel32.dll", CharSet = CharSet.Auto)]
        public static extern int GetPrivateProfileInt(string section, string key, int nDefault, string filePath);

        /// <summary>
        /// 无参构造函数
        /// </summary>
        /// <returns></returns>
        public IniFileHelper()
        {
            this.strIniFilePath = Directory.GetCurrentDirectory() + "\\config.ini";
        }

        /// <summary>
        /// 有参构造函数
        /// </summary>
        /// <param name="strIniFilePath">ini配置文件路径</param>
        /// <returns></returns>
        public IniFileHelper(string strIniFilePath)
        {
            if (strIniFilePath != null)
            {
                this.strIniFilePath = strIniFilePath;
            }
        }

        /// <summary>
        /// 获取ini配置文件中的字符串
        /// </summary>
        /// <param name="section">节名</param>
        /// <param name="key">键名</param>
        /// <param name="strDefault">默认值</param>
        /// <param name="retVal">结果缓冲区</param>
        /// <param name="size">结果缓冲区大小</param>
        /// <returns>成功true,失败false</returns>
        public bool GetIniString(string section, string key, string strDefault, StringBuilder retVal, int size)
        {
            long liRet = GetPrivateProfileString(section, key, strDefault, retVal, size, strIniFilePath);
            return (liRet >= 1);
        }

        public string GetIniString(string section, string key, string strDefault = "")
        {
            StringBuilder temp = new StringBuilder(255);

            bool bl = GetIniString(section, key, strDefault, temp, 255);
            if (!bl)
                return null;
            return temp.ToString();
        }

        // public byte[] GetIniString(string section, string key) {
        //
        //     byte[] temp = new byte[255];
        //
        //     long bl = GetPrivateProfileString(section, key, "", temp, 255, strIniFilePath);
        //     if (bl < 1)
        //         return null;
        //     return temp;
        // }

        /// <summary>
        /// 获取ini配置文件中的整型值
        /// </summary>
        /// <param name="section">节名</param>
        /// <param name="key">键名</param>
        /// <param name="nDefault">默认值</param>
        /// <returns></returns>
        public int GetIniInt(string section, string key, int nDefault)
        {
            return GetPrivateProfileInt(section, key, nDefault, strIniFilePath);
        }

        /// <summary>
        /// 往ini配置文件写入字符串
        /// </summary>
        /// <param name="section">节名</param>
        /// <param name="key">键名</param>
        /// <param name="val">要写入的字符串</param>
        /// <returns>成功true,失败false</returns>
        public bool WriteIniString(string section, string key, string val)
        {
            long liRet = WritePrivateProfileString(section, key, val, strIniFilePath);
            return (liRet != 0);
        }

        /// <summary>
        /// 往ini配置文件写入整型数据
        /// </summary>
        /// <param name="section">节名</param>
        /// <param name="key">键名</param>
        /// <param name="val">要写入的数据</param>
        /// <returns>成功true,失败false</returns>
        public bool WriteIniInt(string section, string key, int val)
        {
            return WriteIniString(section, key, val.ToString());
        }
    }

    /// <summary>
    /// 包含常用字符串的转换
    /// </summary>
    internal static class StringEx
    {
        /**********************************************************************************************//**
         * 判断是否为空
         *
         * @param   obj .
         *
         * @returns True if the null or is empty, false if not.
         **************************************************************************************************/

        public static bool IsNullOrEmpty(this string obj)
        {
            return string.IsNullOrEmpty(obj);
        }

        /**********************************************************************************************//**
         * 将字符串转换成整型数字
         *
         * @param   obj             .
         * @param   defaultValue    默认值.
         *
         * @returns The given data converted to an int.
         **************************************************************************************************/

        public static int ToInt(this string obj, int defaultValue)
        {
            int result;
            if (!Int32.TryParse(obj, out result))
            {
                result = defaultValue;
            }
            return result;
        }

        /**********************************************************************************************//**
         * 转化为float 类型
         *
         * @param   obj             .
         * @param   defaultValue    默认值.
         *
         * @returns The given data converted to a float.
         **************************************************************************************************/

        public static float ToFloat(this string obj, float defaultValue)
        {
            float result;
            if (!float.TryParse(obj, out result))
            {
                result = defaultValue;
            }
            return result;
        }

        /**********************************************************************************************//**
         * 转化为long 类型
         *
         * @param   obj             .
         * @param   defaultValue    默认值.
         *
         * @returns The given data converted to a long.
         **************************************************************************************************/

        public static long ToLong(this string obj, long defaultValue)
        {
            long result;
            if (!Int64.TryParse(obj, out result))
            {
                result = defaultValue;
            }
            return result;
        }

        /**********************************************************************************************//**
         * 转化为Double 类型
         *
         * @param   obj             .
         * @param   defaultValue    默认值.
         *
         * @returns The given data converted to a double.
         **************************************************************************************************/

        public static double ToDouble(this string obj, double defaultValue)
        {
            double result;
            if (!Double.TryParse(obj, out result))
            {
                result = defaultValue;
            }
            return result;
        }

        /**********************************************************************************************//**
         * 转化为Decimal 类型
         *
         * @param   obj             .
         * @param   defaultValue    默认值.
         *
         * @returns The given data converted to a decimal.
         **************************************************************************************************/

        public static decimal ToDecimal(this string obj, decimal defaultValue)
        {
            decimal result;
            if (!decimal.TryParse(obj, System.Globalization.NumberStyles.Float, null, out result))
            {
                result = defaultValue;
            }
            return result;
        }

        /**********************************************************************************************//**
         * 转换为DateTime
         *
         * @param   obj             .
         * @param   defaultValue    默认值.
         *
         * @returns The given data converted to a DateTime.
         **************************************************************************************************/

        public static DateTime ToDateTime(this string obj, DateTime defaultValue)
        {
            DateTime result;
            if (!DateTime.TryParse(obj, out result))
            {
                result = defaultValue;
            }
            return result;
        }

        /**********************************************************************************************//**
         * 分割字符串
         *
         * @param   target      原字符.
         * @param   splitChars  分割符.
         *
         * @returns A string[].
         **************************************************************************************************/

        public static string[] Split(this string target, string splitChars)
        {
            return Regex.Split(target, splitChars, RegexOptions.IgnoreCase);
        }

        /**********************************************************************************************//**
         * 字符串的格式化
         *
         * @param   format  .
         * @param   args    .
         *
         * @returns The formatted new string.
         **************************************************************************************************/

        public static string FormatNewStr(this string format, params object[] args)
        {
            return string.Format(format, args);
        }

        /**********************************************************************************************//**
         * 取出文本中间内容
         *
         *
         * @param   text    全文本.
         * @param   left    左边文本.
         * @param   right   右边文本.
         *
         * @returns A string.
         **************************************************************************************************/

        public static string TextGainCenter(string text, string left, string right)
        {
            //判断是否为null或者是empty
            if (string.IsNullOrEmpty(left))
                return "";
            if (string.IsNullOrEmpty(right))
                return "";
            if (string.IsNullOrEmpty(text))
                return "";
            //判断是否为null或者是empty

            int Lindex = text.IndexOf(left); //搜索left的位置

            if (Lindex == -1)
            { //判断是否找到left
                return "";
            }

            Lindex = Lindex + left.Length; //取出left右边文本起始位置

            int Rindex = text.IndexOf(right, Lindex); //从left的右边开始寻找right

            if (Rindex == -1)
            { //判断是否找到right
                return "";
            }

            return text.Substring(Lindex, Rindex - Lindex); //返回查找到的文本
        }
    }

    internal static class CRC32
    {
        static UInt32[] crcTable =
        {
          0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005,
          0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61, 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd,
          0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
          0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd,
          0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039, 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5,
          0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
          0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95,
          0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d,
          0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
          0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca,
          0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde, 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02,
          0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
          0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692,
          0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6, 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a,
          0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
          0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a,
          0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637, 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb,
          0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
          0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b,
          0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff, 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623,
          0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
          0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3,
          0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b,
          0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
          0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c,
          0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8, 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24,
          0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
          0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654,
          0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0, 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c,
          0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
          0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c,
          0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668, 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
        };   
 
        public static uint getCRC32(byte[] bytes)
        {
            uint iCount = (uint)bytes.Length;
            uint crc = 0xFFFFFFFF;
 
            for (uint i = 0; i < iCount; i++)
            {                
                crc = (crc << 8) ^ crcTable[(crc >> 24) ^ bytes[i]];
            }            
 
            return crc;
        }


        public static string getCRC32(string str) {
            var buf = str.ToCharArray();
            var crc32 = getCRC32(Encoding.Default.GetBytes(buf));
            return crc32.ToString("X");
        }
    }

}